From: Wang Long <wanglong19@meituan.com>
To: darrick.wong@oracle.com, tytso@mit.edu, jack@suse.com
Cc: linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] jbd2: remove the conditional test
Date: Mon, 5 Feb 2018 22:24:39 +0800 [thread overview]
Message-ID: <1517840679-5902-1-git-send-email-wanglong19@meituan.com> (raw)
kmem_cache_destroy already handles null pointers, so we can remove the
conditional test entirely.
This patch also set NULL after the kmem_cache_destroy in function
jbd2_journal_destroy_handle_cache.
Signed-off-by: Wang Long <wanglong19@meituan.com>
---
fs/jbd2/journal.c | 18 +++++++-----------
fs/jbd2/revoke.c | 12 ++++--------
fs/jbd2/transaction.c | 6 ++----
3 files changed, 13 insertions(+), 23 deletions(-)
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index 93016bb..3c27a61a 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -2286,8 +2286,7 @@ static void jbd2_journal_destroy_slabs(void)
int i;
for (i = 0; i < JBD2_MAX_SLABS; i++) {
- if (jbd2_slab[i])
- kmem_cache_destroy(jbd2_slab[i]);
+ kmem_cache_destroy(jbd2_slab[i]);
jbd2_slab[i] = NULL;
}
}
@@ -2388,10 +2387,8 @@ static int jbd2_journal_init_journal_head_cache(void)
static void jbd2_journal_destroy_journal_head_cache(void)
{
- if (jbd2_journal_head_cache) {
- kmem_cache_destroy(jbd2_journal_head_cache);
- jbd2_journal_head_cache = NULL;
- }
+ kmem_cache_destroy(jbd2_journal_head_cache);
+ jbd2_journal_head_cache = NULL;
}
/*
@@ -2649,11 +2646,10 @@ static int __init jbd2_journal_init_handle_cache(void)
static void jbd2_journal_destroy_handle_cache(void)
{
- if (jbd2_handle_cache)
- kmem_cache_destroy(jbd2_handle_cache);
- if (jbd2_inode_cache)
- kmem_cache_destroy(jbd2_inode_cache);
-
+ kmem_cache_destroy(jbd2_handle_cache);
+ jbd2_handle_cache = NULL;
+ kmem_cache_destroy(jbd2_inode_cache);
+ jbd2_inode_cache = NULL;
}
/*
diff --git a/fs/jbd2/revoke.c b/fs/jbd2/revoke.c
index 696ef15..240779e 100644
--- a/fs/jbd2/revoke.c
+++ b/fs/jbd2/revoke.c
@@ -180,14 +180,10 @@ static struct jbd2_revoke_record_s *find_revoke_record(journal_t *journal,
void jbd2_journal_destroy_revoke_caches(void)
{
- if (jbd2_revoke_record_cache) {
- kmem_cache_destroy(jbd2_revoke_record_cache);
- jbd2_revoke_record_cache = NULL;
- }
- if (jbd2_revoke_table_cache) {
- kmem_cache_destroy(jbd2_revoke_table_cache);
- jbd2_revoke_table_cache = NULL;
- }
+ kmem_cache_destroy(jbd2_revoke_record_cache);
+ jbd2_revoke_record_cache = NULL;
+ kmem_cache_destroy(jbd2_revoke_table_cache);
+ jbd2_revoke_table_cache = NULL;
}
int __init jbd2_journal_init_revoke_caches(void)
diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c
index ac31103..3b642e0 100644
--- a/fs/jbd2/transaction.c
+++ b/fs/jbd2/transaction.c
@@ -49,10 +49,8 @@ int __init jbd2_journal_init_transaction_cache(void)
void jbd2_journal_destroy_transaction_cache(void)
{
- if (transaction_cache) {
- kmem_cache_destroy(transaction_cache);
- transaction_cache = NULL;
- }
+ kmem_cache_destroy(transaction_cache);
+ transaction_cache = NULL;
}
void jbd2_journal_free_transaction(transaction_t *transaction)
--
1.8.3.1
next reply other threads:[~2018-02-06 2:31 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-05 14:24 Wang Long [this message]
2018-02-06 10:22 ` Jan Kara
2018-05-21 2:41 ` Theodore Y. Ts'o
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